ASTROSAT CZTI

Data Quality Report

Orbit 28432

Creation date: 2024-06-27T19:51:41.701974
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_101T21_9000004090_28432cztM0_level2.evt modeM0/AS1A10_101T21_9000004090_28432cztM0_level2_quad_clean.evt
Size (bytes)633,029,760132,364,800
Size603.7 MB 126.2 MB
Events in quadrant A3,327,236898,828
Events in quadrant B3,497,480915,795
Events in quadrant C3,594,212886,700
Events in quadrant D8,258,200799,301

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148870
B0152220
C0154800
D0295200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7290270.370370%
B7290350.480110%
C7290981.344307%
D7290113515.569273%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7906 7291 0 0 0.00% 0.00%
B 7906 7291 3 3 0.04% 0.04%
C 7906 7291 1 1 0.01% 0.01%
D 7906 7291 1193 1193 15.09% 16.36%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 11782 63.79 859 842 171.5
A 3 137 8428 44.23 859 842 171.5
A 0 226 7326 37.81 859 842 171.5
B 0 230 29869 177.91 860 836 163.2
B 0 183 29374 174.87 860 836 163.2
B 10 245 27951 166.15 860 836 163.2
C 7 220 159332 823.5 834 837 192.5
C 14 238 135985 702.2 834 837 192.5
C 3 233 48944 249.95 834 837 192.5
D 1 52 4349890 23248.99 788 766 187.1
D 8 195 410759 2191.69 788 766 187.1
D 2 250 305137 1627.07 788 766 187.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter